Regarding redundancy and backup systems, electronic monitoring services are best served by maintaining offender data in more than one location; this should be done in order to avoid the consequences of a natural disaster or other emergencies that might interrupt monitoring and tracking operations. Redundancy in data storage and retrieval technology in more than one location ensures uninterrupted access to data for agencies. In addition, backup lines for moving data between distinct locations is critical. Inevitably server components with moving parts will eventually fail. This means that regular maintenance must be performed on all computer equipment to prevent this failure. Spare parts for solid-state components should also be inventoried to ensure prompt replacement when failure occurs. Since high-quality, uninterrupted power is essential for any system that must be accessed 24 hours a day every day, the primary power sources must be backed up with an alternative, even if temporary, power supply in the event of a blackout. Natural gas-powered generators or diesel-powered generators provide good backup sources of power and should be protected in restricted areas. Field monitoring devices should also be equipped with backup battery power. The safety and environments of those who operate electronic monitoring systems should also be managed effectively for the well-being of the employees. Finally, all electronic-monitoring vendors should back up their community corrections customers with redundant systems that are continuously verified, upgraded, and maintained. Risk management programs should involve every aspect of an electronic monitoring company's activities.